ASTM D4650-19

Standard Specification for Normal Butane Thermophysical Property Tables

ABSTRACT
The normal butane thermophysical property tables are for use in the calculation of the pressure-volume-temperature (PVT), thermodynamic, and transport properties of normal butane for process design and operations. The preparation of the tables and supporting work was done by the National Institute of Standards and Technology (NIST) under the sponsorship of the Gas Research Institute, the American Gas Association, and the Standard Reference Data Program of NIST. These thermophysical property tables are: thermophysical properties of coexisting gaseous and liquid normal butane and thermophysical properties of normal butane.
SCOPE
1.1 The thermophysical property tables for normal butane are for use in the calculation of the pressure-volume-temperature (PVT), thermodynamic, and transport properties of normal butane for process design and operations. Two tables provide properties at the conditions of liquid-vapor equilibrium (saturation properties), one for liquid and one for vapor, at temperatures between 135 K and the critical point, 425.13 K. A third table provides properties at selected T, p points for the equilibrium phase at temperatures between 140 K and 570 K at pressures to 20 MPa. The tables were developed using the National Institute of Standards and Technology Standard Reference Database product REFPROP, version 10.0.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Mar-2019
• ICS: 75.160.30 - Gaseous fuels
• Technical Committee: D03 - Gaseous Fuels
• Drafting Committee: D03.08 - Thermophysical Properties

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4650 −19
Standard Specification for
1
Normal Butane Thermophysical Property Tables
This standard is issued under the fixed designation D4650; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope units, engineering units, chemical units) and additional prop-
erties are available with this program.
1.1 The thermophysical property tables for normal butane
are for use in the calculation of the pressure-volume- 3.2 These thermophysical property tables are:
temperature (PVT), thermodynamic, and transport properties 3.2.1 Thermophysical Properties of Normal Butane Liquid
of normal butane for process design and operations.Two tables at Vapor-Liquid Equilibrium, in SI units. See Table 1.
providepropertiesattheconditionsofliquid-vaporequilibrium 3.2.2 Thermophysical Properties of Normal Butane Vapor
(saturation properties), one for liquid and one for vapor, at at Vapor-Liquid Equilibrium, in SI units. See Table 2.
temperatures between 135 K and the critical point, 425.13 K.A 3.2.3 Thermophysical Properties of Normal Butane Along
third table provides properties at selected T, p points for the Isobars, in SI units. See Table 3.
equilibrium phase at temperatures between 140 K and 570 K at
3.3 The symbols are:
pressures to 20 MPa. The tables were developed using the
T, temperature (K)
National Institute of Standards and Technology Standard Ref- -1
ρ, molar density (mol·L )
-1
erence Database product REFPROP, version 10.0.
H, molar enthalpy (J·mol )
-1 -1
1.2 The values stated in SI units are to be regarded as S, molar entropy (J·K ·mol )
-1 -1
standard. No other units of measurement are included in this Cv, constant volume molar heat capacity (J·K ·mol )
-1 -1
standard. Cp, constant pressure molar heat capacity (J·K ·mol )
-1
c, speed of sound (m·s )
1.3 This international standard was developed in accor-
η, viscosity (µPa·s)
dance with internationally recognized principles on standard-
-1 -1
λ, thermal conductivity (mW·m ·K )
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3.4 The tabulated thermophysical properties are:
-1
mendations issued by the World Trade Organization Technical
ρ, molar density (mol·L )
-1
Barriers to Trade (TBT) Committee.
H, molar enthalpy (J·mol )
-1 -1
S, molar entropy (J·K ·mol )
2. Applicability
-1 -1
Cv, constant volume molar heat capacity (J·K ·mol )
-1 -1
2.1 These tables apply directly only to pure normal butane. Cp, constant pressure molar heat capacity (J·K ·mol )
-1
They may also be used in mathematical models and tables for
c, speed of sound (m·s )
the thermophysical properties of mixtures containing normal η, viscosity (µPa·s)
-1 -1
butane.
λ, thermal conductivity (mW·m ·K )
3. Tables
4. Additional Information
3.1 These tables were produced by equations from a com-
4.1 Reference state properties are required to calculate the
puter package, “NIST Standard Reference Database 23; Ref-
thermodynamic properties enthalpy and entropy from an equa-
erence Fluid Thermodynamic and Transport Properties Data-
tion of state formulation. The reference state properties used
2
base (REFPROP):Version 10.0.” Awide selection of units (SI
are those specified by the International Institute of Refrigera-
tion (IIR): enthalpy, H= 200 J/g, and entropy, S= 1 J/(g·K), for
1 the saturated liquid at 273.15 K (0 °C).
This specification is under the jurisdiction of ASTM Committee D03 on
Gaseous Fuels and is the direct responsibility of Subcommittee D03.08 on
4.2 The molar mass of normal butane is 58.122 g/mol.
Thermophysical Properties.
Current edition approved April 1, 2019. Published May 2019. Originally
5. Keywords
approved in 1987. Last previous edition approved in 2014 as D4650 – 14. DOI:
10.1520/D4650-19.
5.1 butane; N-butane; natural gas; normal butane gas tables;
2
Available from Standard Reference Data, National Institute of Standards and
thermodynamic properties of normal butane; transport proper-
Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070,
http://www.nist.gov. ties of normal butane
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4650 − 19
TABLE 1 Thermophysical Properties of Normal Butane Liquid at Vapor-Liquid Equilibrium
Tp ρ HS C C c ηλ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·l J·mol J·mol ·
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4650 − 14 D4650 − 19
Standard Specification for
1
Normal Butane Thermophysical Property Tables
This standard is issued under the fixed designation D4650; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 The thermophysical property tables for normal butane are for use in the calculation of the pressure-volume-temperature
(PVT), thermodynamic, and transport properties of normal butane for process design and operations. Two tables provide properties
at the conditions of liquid-vapor equilibrium (saturation properties), one for liquid and one for vapor, at temperatures between 135
K and the critical point, 425.13 K. A third table provides properties at selected T,p points for the equilibrium phase at temperatures
between 140 K and 560570 K at pressures to 20 MPa. The tables were developed using the National Institute of Standards and
Technology Standard Reference Database product REFPROP, version 9.1.10.0.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Applicability
2.1 These tables apply directly only to pure normal butane. They may also be used in mathematical models and tables for the
thermophysical properties of mixtures containing normal butane.
3. Tables
3.1 These tables were produced by equations from a computer package, “NIST Standard Reference Database 23; Reference
2
Fluid Thermodynamic and Transport Properties Database (REFPROP): Version 9.1.”10.0.” A wide selection of units (SI units,
engineering units, chemical units) and additional properties are available with this program.
3.2 These thermophysical property tables are:
3.2.1 Thermophysical Properties of Normal Butane Liquid at Vapor-Liquid Equilibrium, in SI units. See Table 1.
3.2.2 Thermophysical Properties of Normal Butane Vapor at Vapor-Liquid Equilibrium, in SI units. See Table 2.
3.2.3 Thermophysical Properties of Normal Butane Along Isobars, in SI units. See Table 3.
3.3 The symbols are:
T, temperature (K)
-1
)
ρ, molar density (mol·L
-1
H, molar enthalpy (J·mol )
-1 -1
S, molar entropy (J·K ·mol )
-1 -1
Cv, constant volume molar heat capacity (J·K ·mol )
-1 -1
Cp, constant pressure molar heat capacity (J·K ·mol )
-1
c, speed of sound (m·s )
η, viscosity (μPa·s)
-1 -1
λ, thermal conductivity (mW·m ·K )
3.4 The tabulated thermophysical properties are:
-1
ρ, molar density (mol·L )
-1
H, molar enthalpy (J·mol )
1
This specification is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.08 on Thermophysical
Properties.
Current edition approved June 1, 2014April 1, 2019. Published July 2014May 2019. Originally approved in 1987. Last previous edition approved in 20082014 as
D4650 – 08.D4650 – 14. DOI: 10.1520/D4650-14.10.1520/D4650-19.
2
Available from Standard Reference Data, National Institute of Standards and Technology (NIST), 100 Bureau Drive,Dr., Stop 3460,1070, Gaithersburg, MD
20899.20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4650 − 19
TABLE 1 Thermophysical Properties of Normal Butane Liquid at Vapor-Liquid Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·l J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
135 6.7910E-07 12.643 -5208.7 -26.944 83.783 114.67 1826.10 2294.1 176.52
137 9.8726E-07 12.611 -4979.3 -25.257 83.793 114.77 1812.80 2114.2 175.86
139 1.4181E-06 12.579 -4749.6 -23.593 83.799 114.87 1799.60 1958.0 175.18
141 2.0137E-06 12.547 -4519.8 -21.951 83.805 114.97 1786.60 1821.1 174.49
143 2.8282E-06 12.515 -4289.8 -20.331 83.809 115.07 1773.70 1700.2 173.78
145 3.9306E-06 12.483 -4059.5 -18.732 83.814 115.17 1761.00 1592.7 173.06
147 5.4080E-06 12.451 -3829.1 -17.154 83.819 115.27 1748.50 1496.5 172.32
149 7.3695E-06 12.419 -3598.4 -15.596 83.827 115.38 1736.00 1409
...